chromium/content/browser/field_trial_synchronizer.cc

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/browser/field_trial_synchronizer.h"

#include "base/check_op.h"
#include "base/functional/bind.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/field_trial_list_including_low_anonymity.h"
#include "base/strings/strcat.h"
#include "base/threading/thread.h"
#include "components/metrics/persistent_system_profile.h"
#include "components/variations/active_field_trials.h"
#include "components/variations/variations_client.h"
#include "content/common/renderer_variations_configuration.mojom.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_process_host.h"
#include "ipc/ipc_channel_proxy.h"
#include "mojo/public/cpp/bindings/associated_remote.h"

namespace content {

namespace {

FieldTrialSynchronizer* g_instance = …;

// Notifies all renderer processes about the |group_name| that is finalized for
// the given field trail (|field_trial_name|). This is called on UI thread.
void NotifyAllRenderersOfFieldTrial(const std::string& field_trial_name,
                                    const std::string& group_name,
                                    bool is_low_anonymity,
                                    bool is_overridden) { … }

}  // namespace

// static
void FieldTrialSynchronizer::CreateInstance() { … }

FieldTrialSynchronizer::FieldTrialSynchronizer() { … }

void FieldTrialSynchronizer::OnFieldTrialGroupFinalized(
    const base::FieldTrial& trial,
    const std::string& group_name) { … }

// static
void FieldTrialSynchronizer::NotifyAllRenderersOfVariationsHeader() { … }

// static
void FieldTrialSynchronizer::UpdateRendererVariationsHeader(
    RenderProcessHost* host) { … }

void FieldTrialSynchronizer::VariationIdsHeaderUpdated() { … }

FieldTrialSynchronizer::~FieldTrialSynchronizer() { … }

}  // namespace content